From owner-freebsd-stable@FreeBSD.ORG Wed May 7 08:10:25 2008 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0C24A1065670 for ; Wed, 7 May 2008 08:10:25 +0000 (UTC) (envelope-from mail25@bzerk.org) Received: from ei.bzerk.org (ei.bzerk.org [82.95.223.12]) by mx1.freebsd.org (Postfix) with ESMTP id 6E5BB8FC1D for ; Wed, 7 May 2008 08:10:24 +0000 (UTC) (envelope-from mail25@bzerk.org) Received: from ei.bzerk.org (BOFH@localhost [127.0.0.1]) by ei.bzerk.org (8.14.2/8.13.8) with ESMTP id m477cfZx001901 for ; Wed, 7 May 2008 09:38:41 +0200 (CEST) (envelope-from mail25@bzerk.org) Received: (from bulk@localhost) by ei.bzerk.org (8.14.2/8.13.8/Submit) id m477ceFu001900 for stable@freebsd.org; Wed, 7 May 2008 09:38:40 +0200 (CEST) (envelope-from mail25@bzerk.org) Date: Wed, 7 May 2008 09:38:40 +0200 From: Ruben de Groot To: stable@freebsd.org Message-ID: <20080507073840.GA1824@ei.bzerk.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4.2.3i X-Spam-Status: No, score=-1.8 required=5.0 tests=ALL_TRUSTED autolearn=failed version=3.2.1 X-Spam-Checker-Version: SpamAssassin 3.2.1 (2007-05-02) on ei.bzerk.org X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (ei.bzerk.org [127.0.0.1]); Wed, 07 May 2008 09:38:43 +0200 (CEST) Cc: Subject: Panics in kern_timeout.c (7-STABLE) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 May 2008 08:10:25 -0000 Hi, I've experienced 2 panics in the last couple of days after upgrading to 7-stable sources of about 2 weeks ago: Fatal trap 12: page fault while in kernel mode cpuid = 0; apic id = 00 fault virtual address = 0x9608 fault code = supervisor read, page not present instruction pointer = 0x20:0xc05f095f stack pointer = 0x28:0xd4ceec80 frame pointer = 0x28:0xd4ceecbc code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL = 0 current process = 13 (swi4: clock sio) trap number = 12 panic: page fault cpuid = 0 Uptime: 3d6h24m45s Physical memory: 503 MB Dumping 96 MB: 81 65 49 33 17 1 #0 doadump () at pcpu.h:195 195 pcpu.h: No such file or directory. in pcpu.h (kgdb) list *0xc05f095f 0xc05f095f is in softclock (/usr/src/sys/kern/kern_timeout.c:203). 198 curticks = softticks; 199 bucket = &callwheel[curticks & callwheelmask]; 200 c = TAILQ_FIRST(bucket); 201 while (c) { 202 depth++; 203 if (c->c_time != curticks) { 204 c = TAILQ_NEXT(c, c_links.tqe); 205 ++steps; 206 if (steps >= MAX_SOFTCLOCK_STEPS) { 207 nextsoftcheck = c; The backtrace doesn't look very informative to me, but I'll include it here for completeness: (kgdb) bt #0 doadump () at pcpu.h:195 #1 0xc05de987 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418 #2 0xc05dec49 in panic (fmt=Variable "fmt" is not available.) at /usr/src/sys/kern/kern_shutdown.c:572 #3 0xc08961cc in trap_fatal (frame=0xd4ceec40, eva=38408) at /usr/src/sys/i386/i386/trap.c:899 #4 0xc0896b4f in trap (frame=0xd4ceec40) at /usr/src/sys/i386/i386/trap.c:280 #5 0xc087cb8b in calltrap () at /usr/src/sys/i386/i386/exception.s:139 #6 0xc05f095f in softclock (dummy=0x0) at /usr/src/sys/kern/kern_timeout.c:202 #7 0xc05bf55b in ithread_loop (arg=0xc2997280) at /usr/src/sys/kern/kern_intr.c:1036 #8 0xc05bc339 in fork_exit (callout=0xc05bf3b0 , arg=0xc2997280, frame=0xd4ceed38) at /usr/src/sys/kern/kern_fork.c:783 #9 0xc087cc00 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:205 Can anyone offer a hand in how to debug this further? cheers, Ruben